|July 27, 1950| 71 | 39 + 47-1/2 | | | No. 7. |May 28, 1951| 70 | 18 (newly broken; Adult male | | | separated end 100) |June 14, 1951| 71 | 18 + 1 |September 22, 1951| 76 | 19 + 29 + 7-1/2 | | | No. 8. |June 12, 1951| 72 | 33 (recently broken) Adult male |July 28, 1951| 76 | 36 + 31 | | | No. 9. |May 2, 1951| 45 | 47 + 1 Juvenile |May 14, 1951| 45 | 47 + 3 |May 19, 1951| 45 | 47 + 5 | | | No. 10. |June 7, 1952| 64 | 51 (recently broken) Subadult female|June 24, 1952| 64 | 51 + 11 | | | No. 11. |August 19, 1949| 42 | 40 (newly broken) Juvenile |June 13, 1950| 58-1/2 | 58 + 28 |August 5, 1950| 63 | 62 + 31 | | | No. 12. |May 17, 1951| 78 | 20 (newly broken) Adult male |June 12, 1951| 78 | 20 + 13 -----------------+------------------+----------+------------------------ Under favorable conditions regeneration occurs at a relatively rapid rate. After a period of healing the new tail grows with a sudden spurt, making most of its gain in length within a few weeks. Then growth abruptly slows or ceases altogether. In young similarly rapid growth of the regenerating tail occurs, but subsequently the increase is more gradual corresponding to the over-all growth of the lizard. In numerous adult skinks marked, and recorded as having well-regenerated tails, the proportions recorded at subsequent captures months or years later were still just the same, demonstrating that extent of regeneration is not proportional to elapsed time. Those adult skinks having unusually long regenerated tails presumably are individuals in which the original tail was lost early in life, and the potentiality for regeneration is probably somewhat less in older individuals, especially those that have stopped growing. Successive records of selected individuals are listed in Table 14 to illustrate trends in regeneration of the tail. In those instances in which the tail is referred to as "newly broken" the separation usually occurred as an accident at the time the lizard was captured, while in those designated as "recently broken" separation had already occurred in some earlier accident but regeneration was not yet perceptibly underway. In the "Tail length" column, plus signs separate the original portion of tail, on the left, from the regenerated portion, on the right.